See also:

Maintenance
The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. ...

Received calls
Displaying calls The 20 calls that were last received are displayed. 1. "Telephone" 2. "Received calls" Displaying calls Calling a number from the list Selecting an entry. ...

Controls
1 Control Display 2 Controller with buttons The buttons can be used to open the menus directly. The controller can be used to select menu items and create the settings. ...